Question 1 A fully saturated cylindrical triaxial sample of clay soil has initial dimensions of 37.8 mm in diameter by 76.2 mm long. A quick undrained triaxial test is conducted on the specimen where the cell pressure is 150 kN/m². The deviator stress at failure was 78 kN/m². After the triaxial test, a water content test is conducted on the entire sample. The combined weight of the wet sample and sample container was 183.3 g. The combined weight of the oven dried sample and sample container was 150.1 g. The sample container weighs 11.6 g. The soil solids specific gravity is 2.65. What is the undrained strength of the soil? Also, what are the water content of the soil, its total (or bulk) unit weight, and its voids ratio? [4 marks]

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